Vacquero Mondalimare

I've always listed a pre-paid Master Card debit card as my billing information. It's worked for years. Now, the "cashier" is not accepting my new card number. I VASTLY prefer using a pre paid card as it limits my liability in the event of a hack. Any thoughts here?

I am no longer able to log into SL. I get an error message: DNS could not resolve host name. I run MAC OS 10.5.8, use firestorm and log in through a Cricket cell modem connection. I have looked at the available information. I CAN log into secondlife.com and, apparently, can't change the host server in cricket (or add google's server). Cricket insists they have not closed any ports and do not block any websites. Help. I miss my friends.